Impact of atmospheric circulation on climate changes under quiet conditions and during geomagnetic disturbances

A. A. Karakhanyan; S. I. Molodykh

doi:10.1117/12.2603412

15 December 2021 Impact of atmospheric circulation on climate changes under quiet conditions and during geomagnetic disturbances

A. A. Karakhanyan, S. I. Molodykh

Author Affiliations +

Proceedings Volume 11916, 27th International Symposium on Atmospheric and Ocean Optics, Atmospheric Physics; 1191684 (2021) https://doi.org/10.1117/12.2603412
Event: 27th International Symposium on Atmospheric and Ocean Optics, Atmospheric Physics, 2021, Moscow, Russian Federation

Abstract

Based on classification of macrosynoptic processes by Wangenheim – Girs and B.L. Dzerdzeevskii, we analyzed atmospheric circulation of the Northern hemisphere extratropical latitudes for different levels of geomagnetic activity. It has been shown that under quiet geomagnetic conditions, meridional circulation enhances, which generates northern blocking processes on the hemisphere. During geomagnetic disturbances, circulation processes grow stronger causing intense cyclonic activity that is related to the transition of southern cyclones to the middle and high latitudes. Cyclonic circulation leads to a decrease in correlation and increase in anticorrelation between the outgoing longwave radiation and near-surface temperature in winter.

Citation Download Citation

A. A. Karakhanyan and S. I. Molodykh "Impact of atmospheric circulation on climate changes under quiet conditions and during geomagnetic disturbances", Proc. SPIE 11916, 27th International Symposium on Atmospheric and Ocean Optics, Atmospheric Physics, 1191684 (15 December 2021); https://doi.org/10.1117/12.2603412

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